JEE Main & Advanced Physics Nuclear Physics And Radioactivity Question Bank Radioactivity

  • question_answer
    An artificial radioactive decay series begins with unstable \[_{94}^{241}Pu\]. The stable nuclide obtained after eight \[\alpha -\]decays and five \[\beta -\]decays is                                                 [SCRA 1998]

    A)            \[_{83}^{209}Bi\]               

    B)            \[_{82}^{209}Pb\]

    C)            \[_{82}^{205}Ti\]                

    D)            \[_{82}^{201}Hg\]

    Correct Answer: A

    Solution :

                       Mass number decreases by \[8\times 4=32\]            Atomic number decreases by \[8\times 2-5=11\]


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